:root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #f59e0b;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px 64px;
}

/* Navbar */
.navbar {
    background: #111827;
    color: #fff;
    padding: 0 16px;
}
.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.brand {
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    font-size: 18px;
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
    align-items: center;
}
.nav-links a {
    color: #d1d5db;
    text-decoration: none;
    font-size: 14px;
}
.nav-links a:hover { color: #fff; }
.user-name {
    color: #9ca3af;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.user-name small { color: #6b7280; }
.btn-link {
    background: none;
    border: none;
    color: #d1d5db;
    cursor: pointer;
    font-size: 13px;
}

.lang-switcher select {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-on-primary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
}

.lang-switcher select:focus {
    outline: 2px solid rgba(255, 255, 255, 0.4);
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.nav-toggle { display: none; }

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.15s;
}
.btn:hover { background: #f3f4f6; }
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-secondary { background: var(--secondary); border-color: var(--secondary); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-lg { padding: 16px 32px; font-size: 18px; font-weight: 600; }
.btn-small { padding: 4px 10px; font-size: 12px; }

/* Forms */
label { display: block; margin-bottom: 12px; font-size: 14px; }
input[type=text], input[type=email], input[type=password],
input[type=number], input[type=date], select, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    margin-top: 4px;
    font-family: inherit;
}
.checkbox { display: flex; align-items: center; gap: 8px; }
.checkbox input { width: auto; margin: 0; }

/* Login */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;    
    align-items: center;
    justify-content: center;
    padding: 24px;
    gap: 32px;  
}

.login-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--primary);
    transition: opacity 0.15s;
}

.login-brand:hover {
    opacity: 0.85;
}

.login-brand:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
    border-radius: 8px;
}


.login-card { width: 100%; max-width: 400px; }

/* Punch widget */
.punch-card { text-align: center; padding: 32px; }
.punch-status { font-size: 18px; margin-bottom: 24px; }
.punch-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}
.dot-live { background: var(--success); animation: pulse 1.5s infinite; }
.dot-idle { background: var(--muted); }
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Stats */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin: 16px 0 24px;
}
.stat { text-align: center; padding: 24px 16px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.data-table th, .data-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.data-table th {
    background: #f9fafb;
    font-weight: 600;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: #fafbfc; }

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    background: #e5e7eb;
    color: #374151;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-approved { background: #dcfce7; color: #166534; }
.badge-warn { background: #fef3c7; color: #92400e; }
.badge-admin { background: #dbeafe; color: #1e40af; }
.badge-open { background: #e0e7ff; color: #3730a3; }
.badge-rejected { background: #fee2e2; color: #991b1b; }

/* Misc */
.muted { color: var(--muted); }
h1 { font-size: 24px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 24px 0 12px; }

.filter-form {
    display: flex;
    gap: 16px;
    align-items: end;
    flex-wrap: wrap;
}
.filter-form label { margin: 0; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px 16px;
    align-items: end;
}
.form-grid button { grid-column: 1 / -1; justify-self: start; }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; margin: 0; }
.kv dt { color: var(--muted); font-size: 13px; }
.kv dd { margin: 0; }

details summary { cursor: pointer; font-weight: 600; padding: 4px 0; }
details[open] summary { margin-bottom: 16px; }

.footer {
    text-align: center;
    padding: 24px;
    color: var(--muted);
    font-size: 12px;
}

/* Mobile */
@media (max-width: 720px) {
    .nav-toggle { display: block; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; }
    .nav-links {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: #111827;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px;
        gap: 12px;
        z-index: 10;
    }
    .nav-links.open { display: flex; }
    .container { padding: 16px 12px 64px; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 8px; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
}

.signup-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;    
    align-items: center; 
    justify-content: center;
    padding: 24px;
    gap: 32px;  
}

.signup-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--primary);
    transition: opacity 0.15s;
}

.signup-brand:hover {
    opacity: 0.85;
}

.signup-brand:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
    border-radius: 8px;
}

.brand-logo {
    display: block;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.brand-name {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--primary);
    line-height: 1;
}

@media (max-width: 480px) {
    .signup-wrapper .login-wrapper {
        gap: 24px;
        padding: 16px;
    }

    .brand-logo {
        width: 32px;
        height: 32px;
    }

    .brand-name {
        font-size: 20px;
    }
}

.signup-card {
    width: 100%;
    max-width: 520px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.muted.small {
    font-size: 13px;
    color: var(--muted);
}

.signup-disclosure {
    margin-top: 16px;
    text-align: center;
}

.signup-disclosure summary {
    cursor: pointer;
    font-size: 13px;
    color: var(--muted);
    list-style: none;
}

.signup-disclosure summary::-webkit-details-marker {
    display: none;
}

.signup-disclosure[open] summary {
    margin-bottom: 8px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb span {
    color: var(--text-muted);
}

.form-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.actions-cell {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.actions-cell form {
    display: inline;
}

.kv {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 8px 16px;
    margin: 0;
}

.kv dt {
    font-size: 13px;
    color: var(--text-muted);
}

.kv dd {
    margin: 0;
    font-size: 14px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.page-header h1 {
    margin: 0;
}

.page-header-actions {
    display: flex;
    gap: 8px;
}

.card-danger {
    border-left: 4px solid var(--danger);
}

.card-danger h2 {
    color: var(--danger);
}

.danger-zone-hint {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0 0 16px;
}

/* ---------------------------------------------------------------------
   Chart layout
   --------------------------------------------------------------------- */

.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.chart-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    min-height: 260px;
}

.chart-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.chart-header h2 {
    margin: 0 0 2px;
    font-size: 16px;
}

.chart-header .small {
    font-size: 12px;
    margin: 0;
    color: var(--text-muted);
}

.chart-total {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.chart-legend {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: auto;
    padding-top: 4px;
}

/* Donut layout */

.chart-donut-wrap {
    display: flex;
    align-items: center;
    gap: 24px;
    flex: 1;
    padding: 8px 0;
}

.chart-donut-legend {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 13px;
    color: var(--text);
}

.chart-donut-legend li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chart-donut-legend strong {
    margin-left: auto;
    font-size: 14px;
}

.chart-donut-total {
    padding-top: 10px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
    font-weight: 600;
}

.legend-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ---------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------- */

@media (max-width: 900px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }

    .chart-card {
        min-height: unset;
    }
}

@media (max-width: 480px) {
    .chart-donut-wrap {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .chart-donut-legend {
        width: 100%;
    }
}